Like most words, it depends on what your purpose is. Knowledge behaves like capital in many senses. You can pay to acquire it or hire someone who has it, and d

Like most words, it depends on what your purpose is. Knowledge behaves like capital in many senses. You can pay to acquire it or hire someone who has it, and doing so can help you or your organization to be more productive. Thus in at least some contexts it's useful to refer to it as a type of capital.